Question

Solve q 30.
Answer is g/2.
Solve it

Answer 1

TO KEEP HIS MOTION IN EQUILLIBRIUM SO THAT HE NOT MAY FALL < HE SHOULD ADJUST HIS ACCELERATION DUE TO GRAVITY EQUALS TO APPLIED FORCE...SO THAT TRANSLATIONAL EQUUILLIBRIUM MAY EASTABLISHED ....WHICH SATES

sum of all the forces acting on a body must zero..

so if he is applying force equals g/2 there should be an external force on him equals to g/2 so he may not fall and eastablish his position(i.e EQUILLIBRIUM